The functionality is available to all customers of fintech's traditional card, Ultraviolet and Nubank's PJ account card in Brazil as of today and will also be released to Mexican customers later this year. To use Nubank card in Apple Pay, simply click on "My Cards" in the panel on the home screen. The app will show the cards available for registration - you can register both the physical and virtual debit or credit card in the digital wallet - and then just select "Add to Apple Pay" and enter the 4-digit password to confirm your choice . Upon continuing the transaction, the customer will automatically be transferred to the Apple Pay confirmation flow. After reading and accepting all the conditions and terms of the wallet, just select the form of card verification and click "Continue" to confirm the card registration.

https://www.latamfintech.co/articles/nubank-gains-integration-with-apple-pay-for-iphone-payment